Semantic information, autonomous agency, and nonequilibrium statistical physics (Q1637)
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Semantic information, autonomous agency, and nonequilibrium statistical physics
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We define semantic information as the syntactic information that a physical system has about its environment which is causally necessary for the system to maintain its own existence.
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“Causal necessity” is defined in terms of counter-factual interventions which scramble correlations between the system and its environment, while “maintaining existence” is defined in terms of the system’s ability to keep itself in a low entropy state.
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